An oil cup liquid level detection method and device and a range hood

Abstract

The application discloses an oil cup liquid level detection method and device and an extractor hood, relates to the technical field of the extractor hood, and discloses the following technical scheme: a set of detection parameters of a liquid level detection component is acquired, a set of detection parameters comprises at least three parameters, and the at least three parameters are selected from a temperature value, a capacitance value, a flexible strain value and an acceleration value; based on the set of detection parameters, a first motion parameter of a lifting rod is determined, the first motion parameter comprises a first motion direction and a first motion speed; in the case that any two parameters in the set of detection parameters satisfy a first mutation condition, the moving distance of the lifting rod is acquired, and the lifting rod is controlled to move away from the oil cup, the two parameters comprise a first parameter and a second parameter, and the first mutation condition indicates that the first change rate of the first parameter is greater than a first threshold value, and the second change rate of the second parameter is greater than a second threshold value. The liquid level state of the oil cup is determined through multiple parameters, the detection precision is improved, and the contact time of the lifting rod and oil stains is reduced.

Description

Technical Field

[0001] This application relates to the field of range hood technology, specifically to a method, device, and range hood for detecting the liquid level in an oil cup. Background Technology

[0002] Range hoods are essential kitchen appliances, and their accompanying oil cups are used to temporarily store the grease separated by the hood. However, because grease accumulates slowly and the oil cups are often hidden, users frequently neglect to clean and empty them regularly. Currently, some range hoods estimate the oil level by accumulating operating time, but this method has significant errors, leading to grease overflow or frequent cup disassembly. Furthermore, some technologies use ultrasonic or laser rangefinders to directly measure the oil level, but grease in the cup can contaminate these sensors, resulting in low measurement accuracy and potential damage. Summary of the Invention

[0003] The purpose of this application is to provide a method, apparatus, and range hood for detecting the liquid level in an oil cup, addressing at least one of the aforementioned existing technical problems. The technical solution is as follows:

[0004] In a first aspect, this application provides a method for detecting the liquid level in an oil cup, characterized in that the method is applied to a liquid level detection assembly and an oil cup, the liquid level detection assembly including a lifting rod, a detection element, and a flexible connector, the lifting rod and the detection element being connected by the flexible connector, the lifting rod being used to drive the detection element and the flexible connector to move in a direction closer to or further away from the oil cup, the method comprising:

[0005] A set of detection parameters of the liquid level detection component is obtained, the set of detection parameters including at least three parameters, the at least three parameters being selected from temperature value, capacitance value, flexible strain value and acceleration value;

[0006] Based on the set of detection parameters, the first motion parameters of the lifting rod are determined, the first motion parameters including the first motion direction and the first motion speed;

[0007] If any two parameters in the set of detection parameters satisfy the first mutation condition, the moving distance of the lifting rod is obtained and the lifting rod is controlled to move away from the oil cup. The two parameters include a first parameter and a second parameter. The first mutation condition indicates that the first rate of change of the first parameter is greater than a first threshold and the second rate of change of the second parameter is greater than a second threshold.

[0008] In a possible implementation, the method for acquiring a set of detection parameters of the liquid level detection component, the set of detection parameters including at least three parameters selected from temperature value, capacitance value, flexible strain value, and acceleration value, further includes:

[0009] Obtain the first distance between the detection element and the oil cup;

[0010] Adjust the temperature of the detection element based on the first distance;

[0011] When the real-time temperature of the detection element is greater than the first preset temperature, the lifting rod is controlled to move at a constant speed in the direction close to the oil cup.

[0012] In a possible implementation, the detection element includes a fan and a drive motor, the drive motor being used to drive the fan to rotate. The method further includes acquiring a set of detection parameters for the liquid level detection component, the set of detection parameters including at least three parameters selected from temperature, capacitance, flexible strain, and acceleration values.

[0013] Obtain the rotation parameters of the detection component, wherein the rotation parameters include at least one of the fan speed and the drive motor power;

[0014] Based on the rotation parameters of the detection element, a set of detection parameters for the liquid level detection assembly are obtained.

[0015] In a possible implementation, after determining the first motion parameters of the lifting rod based on the set of detection parameters, wherein the first motion parameters include a first motion direction and a first motion speed, the method further includes:

[0016] If the first rate of change of the first parameter is greater than the first threshold or the second rate of change of the second parameter is greater than the second threshold, then obtain the third rate of change of the third parameter.

[0017] Based on the third rate of change, the second motion parameters of the lifting rod are determined, and the second motion parameters include the second motion direction and the second motion speed.

[0018] In a possible implementation, the method further includes:

[0019] During the process of the lifting rod moving from the initial position to the end position, if the first rate of change of the first parameter is less than or equal to the first threshold and the first rate of change of the second parameter is less than or equal to the second threshold, a first prompt signal is output. The first prompt signal is used to prompt the user that the oil cup level is within a preset range.

[0020] In a possible implementation, the method further includes:

[0021] During the process of the lifting rod moving from the initial position to the safe position, if the first rate of change of the first parameter is less than or equal to the first threshold and the second rate of change of the second parameter is less than or equal to the second threshold, the lifting rod is controlled to move at a constant speed along the direction closer to the oil cup at a first speed, and the safe position is located between the initial position and the preset position.

[0022] During the process of the lifting rod moving from the safe position to the end position, if the first rate of change of the first parameter is less than or equal to the first threshold and the second rate of change of the second parameter is less than or equal to the second threshold, the lifting rod is controlled to move at a second speed along the direction closer to the oil cup at a constant speed, where the second speed is less than the first speed.

[0023] In a possible implementation, the step of obtaining the moving distance of the lifting rod and controlling the lifting rod to move away from the oil cup when any two parameters in the set of detection parameters satisfy the first abrupt change condition includes:

[0024] The movement distance of the lifting rod is obtained, and the lifting rod is controlled to move along a first direction to a first preset position and then along a second direction to a second preset position, wherein the first direction and the second direction intersect.

[0025] Secondly, this application provides an oil cup level detection device, applied to a level detection assembly and an oil cup. The level detection assembly includes a lifting rod, a detection element, and a flexible connector. The lifting rod and the detection element are connected by the flexible connector. The lifting rod is used to drive the detection element and the flexible connector to move in a direction closer to or further away from the oil cup. The device includes:

[0026] The data acquisition module is used to acquire a set of detection parameters of the liquid level detection component. The set of detection parameters includes at least three parameters, which are selected from temperature value, capacitance value, flexible strain value and acceleration value.

[0027] The lifting module is used to determine the first motion parameters of the lifting rod based on the set of detection parameters, wherein the first motion parameters include a first motion direction and a first motion speed;

[0028] The first processing module is used to obtain the moving distance of the lifting rod and control the lifting rod to move away from the oil cup when any two parameters in the set of detection parameters meet the first mutation condition. The two parameters include a first parameter and a second parameter. The first mutation condition indicates that the first rate of change of the first parameter is greater than a first threshold and the second rate of change of the second parameter is greater than a second threshold.

[0029] Thirdly, this application provides a range hood, which includes a liquid level detection component and an oil cup. The liquid level detection component includes a lifting rod, a detection element, a flexible connector, and a control device. The lifting rod and the detection element are connected by the flexible connector, and the control device is connected to the lifting rod.

[0030] The lifting rod is used to drive the detection element and the flexible connector to move in a direction closer to or further away from the oil cup. The detection element is used to detect temperature value, capacitance value, flexible strain value and acceleration value. The control device is used to control the movement speed and movement direction of the lifting rod.

[0031] In a possible implementation, the detection element includes an accelerometer, a capacitance sensor, a temperature control device, and a temperature detection device.

[0032] The acceleration sensor, the capacitive sensing device, the temperature regulating device, and the temperature detection device are integrated into one unit.

[0033] The oil cup liquid level detection method, device, and range hood provided in this application have the following technical advantages:

[0034] The method includes: acquiring a set of detection parameters for a liquid level detection component, the set of detection parameters including at least three parameters selected from temperature, capacitance, flexible strain, and acceleration; determining first motion parameters of the lifting rod based on the set of detection parameters, the first motion parameters including a first motion direction and a first motion speed; and, under the condition that any two parameters in the set of detection parameters satisfy a first abrupt change condition, acquiring the moving distance of the lifting rod and controlling the lifting rod to move away from the oil cup, the two parameters including the first parameter and the second parameter, the first abrupt change condition being characterized by a first rate of change of the first parameter being greater than a first threshold and a second rate of change of the second parameter being greater than a second threshold. By verifying the rate of change of the detection parameters using multiple parameters to determine the liquid level state of the oil cup, the detection accuracy is improved and the contact time between the lifting rod and the oil is reduced.

[0035] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0036] To more clearly illustrate the technical solutions and advantages in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0037] Figure 1This is a schematic diagram of the structure of a liquid level detection component provided in an embodiment of this application;

[0038] Figure 2 This is a schematic diagram of the structure of an oil cup provided in an embodiment of this application.

[0039] Figure 3 This is a schematic flowchart of an oil cup level detection method provided in an embodiment of this application;

[0040] Figure 4 This is a schematic diagram of an oil cup level detection device provided in an embodiment of this application;

[0041] Figure 5 This is a schematic diagram of the hardware structure of a device for implementing an oil cup level detection method provided in an embodiment of this application.

[0042] The corresponding reference numerals in the attached figures are:

[0043] 10. Lifting rod; 20. Flexible connector; 30. Detection component; 40. Control device; 50. Oil cup; 51. Highest liquid level position; 52. Warning liquid level position; 53. Lowest liquid level position. Detailed Implementation

[0044] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0045] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or server that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or devices.

[0046] Various exemplary embodiments, features, and aspects of this application will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0047] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0048] In this document, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. Furthermore, the term "at least one" in this document means any combination of at least two of any one or more elements. For example, including at least one of A, B, and C can mean including any one or more elements selected from the set consisting of A, B, and C.

[0049] Furthermore, to better illustrate this application, numerous specific details are provided in the following detailed description. Those skilled in the art should understand that this application can be implemented without certain specific details. In some instances, methods, means, components, and circuits well-known to those skilled in the art have not been described in detail in order to highlight the main points of this application.

[0050] Please see Figure 1 One embodiment of this application provides a range hood, which includes a liquid level detection component and an oil cup 50. The liquid level detection component includes a lifting rod 10, a detection element 30, a flexible connector 20, and a control device 40. The lifting rod 10 and the detection element 30 are connected by the flexible connector 20, and the control device 40 is connected to the lifting rod 10. The lifting rod 10 is used to drive the detection element 30 and the flexible connector 20 to move towards or away from the oil cup 50. The detection element 30 is used to detect temperature, capacitance, flexible strain, and acceleration values. The control device 40 is used to control the movement speed and direction of the lifting rod 10. By detecting temperature, capacitance, flexible strain, and acceleration values, the liquid level in the oil cup 50 is comprehensively determined, avoiding errors that may occur with a single detection method and improving detection accuracy. The lifting rod 10 can move relative to the oil cup 50, reducing the contact time between the detection element 30 and the oil.

[0051] Understandably, the oil cup 50 is used to collect and store grease from the range hood during use. When the grease level exceeds the maximum level of the oil cup 50, overflowing grease can contaminate the range hood or other kitchen appliances. Conversely, when the grease level is low, frequent disassembly and cleaning of the oil cup 50 can easily damage it. Some methods for measuring the grease level include ultrasonic and laser measurement. However, when using ultrasonic measurement, the ultrasonic rangefinder relies on the propagation of sound waves to measure the level. When grease covers the sensing area on the liquid surface, it may alter the propagation path of the sound waves or absorb them, leading to signal attenuation or distortion. Grease can also form bubbles or impurities, further affecting the propagation and reflection of sound waves, thus affecting measurement accuracy. When using laser measurement, the laser rangefinder relies on the reflection of the laser beam to calculate distance. If there is grease on the liquid surface, the surface of the grease will alter the reflection characteristics of the laser. Furthermore, variations in the viscosity or thickness of the grease may affect the intensity of the reflected light, reducing measurement accuracy. Many ultrasonic and laser sensors are not designed with oil contamination in mind, and ordinary sensors may not be able to work stably in highly polluted environments.

[0052] Specifically, the control device 40 in the liquid level detection assembly is electrically connected to the lifting rod 10 and the detection element 30, respectively. The end of the lifting rod 10 closest to the control device 40 is connected to a lifting drive device. The lifting drive device is used to drive the lifting rod 10 to move based on control commands issued by the control device 40, and is electrically connected to the control device 40. In one possible embodiment, the lifting drive device includes a motion state detection module, which is used to detect the displacement distance of the lifting rod 10. The motion state detection module can calculate the displacement distance of the lifting rod 10 based on the number of steps taken by the stepper motor or the rotation angle of the motor. In another possible embodiment, a displacement sensor is connected to the lifting rod 10 to acquire the displacement distance of the lifting rod 10.

[0053] Specifically, the oil cup 50 includes a maximum liquid level position 51, a minimum liquid level position 52, and a warning liquid level position 53. The warning liquid level position 52 is located between the maximum liquid level position 51 and the minimum liquid level position 53. The minimum liquid level position is located on the plane where the bottom of the oil cup 50 is located, and the maximum liquid level position is located on the plane where the top of the oil cup 50 is located. When the real-time liquid level height of the oil cup 50 exceeds the warning liquid level position, it indicates that there is too much oil in the oil cup 50.

[0054] Specifically, when the lifting rod 10 rises to the initial position, the lowest point of the lifting rod 10 is higher than the highest liquid level of the oil cup 50; when the lifting rod 10 falls to the final position, the lowest point of the lifting rod 10 is higher than the highest liquid level of the oil cup 50. During the movement of the lifting rod 10, the lifting rod 10 will not come into contact with the range hood or the oil cup 50 itself.

[0055] Please see Figure 2The detection component 30 in this embodiment includes an acceleration sensor, a capacitance sensing device, a temperature regulating device, and a temperature detection device; the acceleration sensor, capacitance sensing device, temperature regulating device, and temperature detection device are integrated. By synchronously acquiring multiple data such as acceleration, capacitance, and temperature, the changes in the liquid level of the oil cup 50 and the environment can be comprehensively reflected, improving the accuracy of liquid level detection, reducing the workload of installing, calibrating, and maintaining individual sensors, and lowering the maintenance frequency of the detection component 30.

[0056] Specifically, the temperature regulating device is a heating device, which is connected to the temperature detection device, and the capacitive sensing device is located on the side of the detection element 30 near the oil cup 50.

[0057] Please see Figure 3 , Figure 3 This is a flowchart illustrating an oil cup level detection method according to an embodiment of this application. This application provides method operation steps as shown in the embodiments or flowcharts, but based on conventional or non-inventive methods, more or fewer operation steps may be included. The order of steps listed in the embodiments is merely one possible execution order among many and does not represent the only possible execution order. In actual system or server product execution, the method can be executed sequentially according to the embodiments or drawings, or in parallel (e.g., in a parallel processor or multi-threaded processing environment). Figure 3 As shown, the oven temperature control method provided in this application embodiment can be applied to, for example... Figure 1 The oil cup detection assembly shown and Figure 2 The oil cup shown. Specifically, it may include the following steps:

[0058] S101, acquire a set of detection parameters of the liquid level detection component. The set of detection parameters includes at least three parameters, which are selected from temperature value, capacitance value, flexible strain value and acceleration value.

[0059] Specifically, the temperature value T, capacitance value C, flexible strain value ε, and acceleration value a of the detection component are detected and sent to the control device. Based on the temperature value T, capacitance value C, flexible strain value ε, and acceleration value a, their respective change parameters are obtained as the rate of change of temperature value ΔT, the rate of change of capacitance value ΔC, the rate of change of flexible strain value Δε, and the rate of change of acceleration value Δa.

[0060] S103, based on a set of detection parameters, determine the first motion parameters of the lifting rod, the first motion parameters including the first motion direction and the first motion speed.

[0061] Specifically, when two or more parameters in a set of detection parameters change abruptly, it indicates that the detection element has moved from the air medium to the oil medium and has come into contact with the oil interface; when only one parameter in a set of detection parameters changes abruptly, it indicates that the detection element has encountered an abnormality and needs to be re-detected; when no parameter in a set of detection parameters changes abruptly, it indicates that the detection element has moved in the air medium.

[0062] Specifically, the first direction of motion includes the direction close to the oil cup and the direction away from the oil cup, and the first velocity of motion characterizes the moving speed of the lifting rod. When the lifting rod moves at a constant speed, the acceleration value a is zero.

[0063] S105, when any two parameters in a set of detection parameters satisfy the first mutation condition, obtain the moving distance of the lifting rod and control the lifting rod to move away from the oil cup. The two parameters include the first parameter and the second parameter. The first mutation condition indicates that the first rate of change of the first parameter is greater than the first threshold and the second rate of change of the second parameter is greater than the second threshold.

[0064] Specifically, for example, a set of detection parameters includes temperature value T and capacitance value C. If the rate of change of temperature value ΔT is greater than a preset temperature threshold and the rate of change of capacitance value ΔC is greater than a preset capacitance threshold, it indicates that the detection element has come into contact with oil. The moving distance s of the lifting rod is obtained, and the liquid level height h = Hs is calculated.

[0065] Where h is the oil level in the cup, H is the straight-line distance between the lifting rod and the oil cup at the initial position, and s is the distance the lifting rod travels. If the oil level in the cup exceeds the warning threshold, a warning lifting signal is issued to remind the user to clean the oil cup.

[0066] Specifically, when the detection component comes into contact with oil, the control device controls the lifting rod to move away from the oil cup. If the detection component gets oily, the oil will fall back into the oil cup during the rising process, meaning that the detection component and the oil will hardly come into contact.

[0067] In one specific embodiment, the above-mentioned step S101 further includes:

[0068] S202, Obtain the first distance between the test piece and the oil cup.

[0069] Specifically, there is a first distance between the detection element and the oil cup, which represents the straight-line distance between the detection element and the oil cup. The lifting rod moves at a constant speed or moves according to a unit displacement distance during the descent process.

[0070] S204, adjust the temperature of the detection element based on the first distance.

[0071] Specifically, the first distance characterizes the distance between the detection element and the warning liquid surface position. If the first distance is greater than zero, the heating device is turned on. During the movement of the detection element in the air medium, the temperature of the detection element is greater than the first preset temperature T1. The first preset temperature T1 is greater than the ambient temperature. In the embodiments of this specification, the first preset temperature T1 is 50°C.

[0072] S206, when the real-time temperature of the test piece is greater than the first preset temperature, control the lifting rod to move at a constant speed along the direction closer to the oil cup.

[0073] Specifically, when the real-time temperature of the detection element is greater than the first preset temperature, the control lifting rod moves at a constant speed towards the oil cup. When the real-time temperature of the detection element is less than or equal to the first preset temperature, it indicates that the temperature detection device and / or temperature regulation device of the detection element needs maintenance. At this time, the control lifting rod is either stationary or raised to its initial position. By combining the first distance and temperature parameters, the detection element can dynamically adjust the detection strategy to adapt to different liquid levels, temperatures, and environmental conditions, making the liquid level detection component more versatile.

[0074] In one specific embodiment, the detection element includes a fan and a drive motor, the drive motor being used to drive the fan to rotate, and prior to S101, the following is also included:

[0075] S301, Obtain the rotation parameters of the detection component, including at least one of the fan speed and the power of the drive motor.

[0076] Specifically, during the detection process, the lifting rod moves at a constant speed along the direction close to the oil cup and rotates at a constant speed in a preset direction. The real-time speed of the fan is obtained using a photoelectric sensor, Hall effect sensor, or speed encoder. The current power is calculated by the power detection module of the drive motor. When the rate of change of speed or the rate of change of power exceeds the corresponding threshold, it indicates that the detection component has entered the oil.

[0077] S303, based on the rotation parameters of the detection element, obtain a set of detection parameters for the liquid level detection component.

[0078] Specifically, a set of detection parameters includes temperature T, capacitance C, flexible strain ε, acceleration a, rotational speed ω, and power P. Based on temperature T, capacitance C, flexible strain ε, acceleration a, rotational speed ω, and power P, their corresponding change parameters are obtained as the rate of change of temperature ΔT, the rate of change of capacitance ΔC, the rate of change of flexible strain Δε, the rate of change of acceleration Δa, the rate of change of rotational speed Δω, and the rate of change of power ΔP. By adding a fan to the detection component, the lifting rod can both rise and fall and rotate, enriching the range of detection parameters and improving the accuracy of the detection results.

[0079] In one specific embodiment, the above-described S103 is followed by:

[0080] S401, if the first rate of change of the first parameter is greater than the first threshold or the second rate of change of the second parameter is greater than the second threshold, obtain the third rate of change of the third parameter.

[0081] Specifically, a target parameter combination is selected from a set of detection parameters. The target parameter combination includes a first parameter and a second parameter. For example, temperature value T and capacitance value C are selected as the target parameter combination. The rate of change of temperature value ΔT and the rate of change of capacitance value ΔC are obtained. If the rate of change of temperature value ΔT is greater than the corresponding preset temperature threshold and the rate of change of capacitance value ΔC is greater than the corresponding preset capacitance threshold, a third parameter is obtained. The third parameter is the acceleration value a and the corresponding rate of change of acceleration value Δa.

[0082] S403, based on the third rate of change, determine the second motion parameters of the lifting rod, the second motion parameters including the second motion direction and the second motion speed.

[0083] Specifically, if the third rate of change exceeds the third threshold, it indicates that the probe has come into contact with oil. The lifting rod is then controlled to move at a constant speed away from the oil cup. If the third rate of change is too large or too small, the lifting rod is stopped and a warning is issued to prevent damage to the probe. By dynamically monitoring the parameters through triple verification, the movement of the lifting rod is ensured to adapt to the current detection conditions, reducing measurement errors.

[0084] In one specific embodiment, the above-mentioned oil cup level detection method further includes:

[0085] During the process of the lifting rod moving from the initial position to the end position, if the first rate of change of the first parameter is less than or equal to the first threshold and the first rate of change of the second parameter is less than or equal to the second threshold, a first prompt signal is output. The first prompt signal is used to prompt the user that the oil cup level is within the preset range.

[0086] Specifically, for example, during the process of the lifting rod moving from the initial position to the end position, the temperature value T and the capacitance value C are selected as the first parameter and the second parameter. If the rate of change of the temperature value ΔT is less than or equal to the corresponding preset temperature threshold and the rate of change of the capacitance value ΔC is less than or equal to the corresponding preset capacitance threshold, it indicates that the detection element is moving in the air medium, thus avoiding excessive detection actions.

[0087] In one specific embodiment, the above-mentioned oil cup level detection method further includes:

[0088] S501, during the process of the lifting rod moving from the initial position to the safe position, if the first rate of change of the first parameter is less than or equal to the first threshold and the second rate of change of the second parameter is less than or equal to the second threshold, the lifting rod is controlled to move at a constant speed along the direction closer to the oil cup at the first speed, and the safe position is located between the initial position and the preset position.

[0089] Specifically, the movement of the lifting rod from the initial position to the final position includes two stages, namely the first stage and the second stage. In the two stages, the lifting rod moves at different speeds. The first stage is used for initial rapid measurement of the oil cup level, and the second stage is used for accurate detection of the oil cup level.

[0090] S503, during the process of the lifting rod moving from the safe position to the end position, if the first rate of change of the first parameter is less than or equal to the first threshold and the second rate of change of the second parameter is less than or equal to the second threshold, the lifting rod is controlled to move at a constant speed along the direction closer to the oil cup at a second speed, the second speed being less than the first speed.

[0091] Specifically, the safe position is located at the highest liquid level or the warning liquid level in the oil cup. In most cases, the oil contamination is between the safe and the stop position. If the lifting rod moves too quickly, it is prone to becoming contaminated with a large amount of oil. Therefore, in the second stage, the lifting rod moves at a second speed, and the threshold values ​​of each parameter in the corresponding detection parameters are also adaptively adjusted. Using different moving speeds for the lifting rod in different detection stages helps reduce liquid disturbance and improves the stability and reliability of the detection data.

[0092] In one specific embodiment, S105 includes:

[0093] The movement distance of the lifting rod is obtained, and the lifting rod is controlled to move along the first direction to the first preset position and then along the second direction to the second preset position, where the first direction and the second direction intersect.

[0094] Specifically, in one embodiment, the moving distance *s* of the lifting rod is obtained. If the moving distance *s* is less than or equal to a first moving threshold, the lifting rod is controlled to move along a first direction. If the moving distance *s* is greater than the first moving threshold, the lifting rod is controlled to move along a second direction. The first direction is the direction away from the oil cup, and the second direction is along the length of the oil cup, and the second direction is orthogonal to the first direction. In this way, the lifting rod can move in multiple segments in different directions, meeting the measurement requirements of complex liquid level detection and improving the response speed and liquid level detection efficiency of the lifting rod.

[0095] The method includes: acquiring a set of detection parameters for a liquid level detection component, the set of detection parameters including at least three parameters selected from temperature, capacitance, flexible strain, and acceleration; determining first motion parameters of the lifting rod based on the set of detection parameters, the first motion parameters including a first motion direction and a first motion speed; and, under the condition that any two parameters in the set of detection parameters satisfy a first abrupt change condition, acquiring the moving distance of the lifting rod and controlling the lifting rod to move away from the oil cup, the two parameters including the first parameter and the second parameter, the first abrupt change condition being characterized by a first rate of change of the first parameter being greater than a first threshold and a second rate of change of the second parameter being greater than a second threshold. By verifying the rate of change of the detection parameters using multiple parameters to determine the liquid level state of the oil cup, the detection accuracy is improved and the contact time between the lifting rod and the oil is reduced.

[0096] This application also provides an oil cup level detection device, such as... Figure 4 As shown, the device may include:

[0097] The data acquisition module 410 is used to acquire a set of detection parameters of the liquid level detection component. The set of detection parameters includes at least three parameters, which are selected from temperature value, capacitance value, flexible strain value and acceleration value.

[0098] The lifting module 420 is used to determine the first motion parameters of the lifting rod based on a set of detection parameters. The first motion parameters include a first motion direction and a first motion speed.

[0099] The first processing module 430 is used to obtain the moving distance of the lifting rod and control the lifting rod to move away from the oil cup when any two parameters in a set of detection parameters meet the first mutation condition. The two parameters include the first parameter and the second parameter. The first mutation condition indicates that the first rate of change of the first parameter is greater than the first threshold and the second rate of change of the second parameter is greater than the second threshold.

[0100] Specifically, the aforementioned oil cup level detection device also includes:

[0101] The distance acquisition module is used to acquire the first distance between the detection element and the oil cup;

[0102] A temperature control module is used to adjust the temperature of the detection element based on the first distance;

[0103] The first adjustment module controls the lifting rod to move at a constant speed along the direction closer to the oil cup when the real-time temperature of the detection element is greater than the first preset temperature.

[0104] Specifically, the aforementioned oil cup level detection device also includes:

[0105] A rotation parameter acquisition module is used to acquire the rotation parameters of the detection component, wherein the rotation parameters include at least one of the fan speed and the drive motor power;

[0106] The detection module is updated to obtain a set of detection parameters for the liquid level detection component based on the rotation parameters of the detection element.

[0107] Specifically, the aforementioned oil cup level detection device also includes:

[0108] The third rate of change determination module is used to obtain the third rate of change of the third parameter when the first rate of change of the first parameter is greater than the first threshold or the second rate of change of the second parameter is greater than the second threshold.

[0109] The second adjustment module is used to determine the second motion parameters of the lifting rod based on the third rate of change. The second motion parameters include the second motion direction and the second motion speed.

[0110] Specifically, the aforementioned oil cup level detection device also includes:

[0111] The first prompting module is used to output a first prompting signal if, during the process of the lifting rod moving from the initial position to the end position, the first rate of change of the first parameter is less than or equal to a first threshold and the first rate of change of the second parameter is less than or equal to a second threshold. The first prompting signal is used to prompt the user that the oil cup level is within a preset range.

[0112] Specifically, the aforementioned oil cup level detection device also includes:

[0113] The first motion module is configured to control the lifting rod to move at a first speed along the direction closer to the oil cup at a constant speed if, during the process of the lifting rod moving from the initial position to the safe position, the first rate of change of the first parameter is less than or equal to a first threshold and the second rate of change of the second parameter is less than or equal to a second threshold, and the safe position is located between the initial position and the preset position.

[0114] The second motion module is used to control the lifting rod to move at a second speed along the direction closer to the oil cup at a uniform speed, where the first rate of change of the first parameter is less than or equal to a first threshold and the second rate of change of the second parameter is less than or equal to a second threshold, during the process of the lifting rod moving from the safe position to the end position. The second speed is less than the first speed.

[0115] In one embodiment of this application, the first adjustment module includes:

[0116] The first motion unit is used to obtain the moving distance of the lifting rod, control the lifting rod to move along a first direction to a first preset position and then along a second direction to a second preset position, wherein the first direction and the second direction intersect.

[0117] It should be noted that the apparatus provided in the above embodiments is only illustrated by the division of the above functional modules when implementing its functions. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device can be divided into different functional modules to complete all or part of the functions described above. In addition, the apparatus and method embodiments provided in the above embodiments belong to the same concept, and the specific implementation process can be found in the method embodiments, which will not be repeated here.

[0118] This application provides a computer device including a processor and a memory. The memory stores at least one instruction or at least one program, which is loaded and executed by the processor to implement an oil cup level detection method as provided in the above method embodiments.

[0119] Figure 5 A schematic diagram of the hardware structure of a device for implementing the oil cup level detection method provided in the embodiments of this application is shown. The device can constitute or include the apparatus or system provided in the embodiments of this application. Figure 5 As shown, device 5 may include one or more processors 502 (shown as 502a, 502b, ..., 502n in the figure) 502 (processor 502 may include, but is not limited to, a microprocessor MCU or a programmable logic device FPGA, etc.), a memory 504 for storing data, and a transmission device 506 for communication functions. In addition, it may also include: a display, an input / output interface (I / O interface), a universal serial bus (USB) port (which may be included as one of the ports of the I / O interface), a network interface, a power supply, and / or a camera. Those skilled in the art will understand that... Figure 5 The structure shown is for illustrative purposes only and does not limit the structure of the aforementioned electronic device. For example, device 5 may also include a... Figure 5 The more or fewer components shown, or having the same Figure 5 The different configurations shown.

[0120] It should be noted that the aforementioned one or more processors 502 and / or other data processing circuits are generally referred to herein as "data processing circuits". These data processing circuits may be embodied, in whole or in part, in software, hardware, firmware, or any other combination. Furthermore, the data processing circuits may be a single, independent processing module, or may be wholly or partially integrated into any other element within device 5 (or mobile device). As involved in the embodiments of this application, the data processing circuits serve as processor control (e.g., selection of a variable resistor termination path connected to an interface).

[0121] The memory 504 can be used to store software programs and modules of application software, such as the program instructions / data storage device corresponding to the method in this embodiment. The processor 502 executes various functional applications and data processing by running the software programs and modules stored in the memory 504, thereby realizing the above-described oil cup level detection method. The memory 504 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 504 may further include memory remotely located relative to the processor 502, and these remote memories can be connected to the device 5 via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0122] The transmission device 506 is used to receive or send data via a network. Specific examples of the network described above may include a wireless network provided by the communication provider of device 5. In one example, the transmission device 606 includes a Network Interface Controller (NIC), which can connect to other network devices via a base station to communicate with the Internet. In another example, the transmission device 606 may be a Radio Frequency (RF) module used for wireless communication with the Internet.

[0123] The display can be, for example, a touchscreen liquid crystal display (LCD) that allows the user to interact with the user interface of device 5 (or mobile device).

[0124] This application embodiment also provides a computer-readable storage medium, which can be disposed in a server to store at least one instruction or at least one program related to implementing an oil cup level detection method in the method embodiment. The at least one instruction or at least one program is loaded and executed by the processor to implement the oil cup level detection method provided in the above method embodiment.

[0125] Optionally, in this embodiment, the storage medium may be located at at least one of the multiple network servers in a computer network. Optionally, in this embodiment, the storage medium may include, but is not limited to, various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0126] This invention also provides a computer program product or computer program, which includes computer instructions stored in a computer-readable storage medium. A processor of a computer device reads the computer instructions from the computer-readable storage medium and executes the computer instructions, causing the computer device to perform a water leakage detection method provided in the various optional embodiments described above.

[0127] It should be noted that the order of the embodiments described above is merely for descriptive purposes and does not represent the superiority or inferiority of the embodiments. Furthermore, the above description focuses on specific embodiments of this application. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps described in the claims can be performed in a different order than that shown in the embodiments and still achieve the desired results. Additionally, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired results. In some implementations, multitasking and parallel processing are also possible or may be advantageous.

[0128] The various embodiments in this application are described in a progressive manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the device, equipment, and storage medium embodiments are basically similar to the method embodiments, so the descriptions are relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0129] Those skilled in the art will understand that all or part of the steps of the above embodiments can be implemented by hardware or by a program instructing related hardware. The program can be stored in a computer-readable storage medium, such as a read-only memory, a disk, or an optical disk.

[0130] The above description is only a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A method for detecting the liquid level in an oil cup, characterized in that, The method is applied to a liquid level detection assembly and an oil cup. The liquid level detection assembly includes a lifting rod, a detection element, and a flexible connector. The lifting rod and the detection element are connected by the flexible connector. The lifting rod is used to move the detection element and the flexible connector in a direction closer to or farther from the oil cup. The method includes: A set of detection parameters of the liquid level detection component is obtained, the set of detection parameters including at least three parameters, the at least three parameters being selected from temperature value, capacitance value, flexible strain value and acceleration value; Based on the set of detection parameters, the first motion parameters of the lifting rod are determined, the first motion parameters including the first motion direction and the first motion speed; If any two parameters in the set of detection parameters satisfy the first mutation condition, the moving distance of the lifting rod is obtained and the lifting rod is controlled to move away from the oil cup. The two parameters include a first parameter and a second parameter. The first mutation condition indicates that the first rate of change of the first parameter is greater than a first threshold and the second rate of change of the second parameter is greater than a second threshold.

2. The method according to claim 1, characterized in that, The method for obtaining a set of detection parameters for the liquid level detection component, wherein the set of detection parameters includes at least three parameters selected from temperature, capacitance, flexible strain, and acceleration, further includes: Obtain the first distance between the detection element and the oil cup; Adjust the temperature of the detection element based on the first distance; When the real-time temperature of the detection element is greater than the first preset temperature, the lifting rod is controlled to move at a constant speed in the direction close to the oil cup.

3. The method according to claim 1, characterized in that, The detection component includes a fan and a drive motor, the drive motor being used to drive the fan to rotate. The method further includes acquiring a set of detection parameters for the liquid level detection component, the set of detection parameters including at least three parameters selected from temperature, capacitance, flexible strain, and acceleration values. Obtain the rotation parameters of the detection component, wherein the rotation parameters include at least one of the fan speed and the drive motor power; Based on the rotation parameters of the detection element, a set of detection parameters for the liquid level detection assembly are obtained.

4. The method according to any one of claims 1-3, characterized in that, After determining the first motion parameters of the lifting rod based on the set of detection parameters, wherein the first motion parameters include a first motion direction and a first motion speed, the method further includes: If the first rate of change of the first parameter is greater than the first threshold or the second rate of change of the second parameter is greater than the second threshold, then obtain the third rate of change of the third parameter. Based on the third rate of change, the second motion parameters of the lifting rod are determined, and the second motion parameters include the second motion direction and the second motion speed.

5. The method according to any one of claims 1-3, characterized in that, The method further includes: During the process of the lifting rod moving from the initial position to the end position, if the first rate of change of the first parameter is less than or equal to the first threshold and the first rate of change of the second parameter is less than or equal to the second threshold, a first prompt signal is output. The first prompt signal is used to prompt the user that the oil cup level is within a preset range.

6. The method according to claim 5, characterized in that, The method further includes: During the process of the lifting rod moving from the initial position to the safe position, if the first rate of change of the first parameter is less than or equal to the first threshold and the second rate of change of the second parameter is less than or equal to the second threshold, the lifting rod is controlled to move at a constant speed along the direction closer to the oil cup at the first speed. The safe position is located at the highest liquid level position or the warning liquid level position of the oil cup. During the process of the lifting rod moving from the safe position to the end position, if the first rate of change of the first parameter is less than or equal to the first threshold and the second rate of change of the second parameter is less than or equal to the second threshold, the lifting rod is controlled to move at a second speed along the direction closer to the oil cup at a constant speed, where the second speed is less than the first speed.

7. The method according to any one of claims 1-3, characterized in that, The step of obtaining the moving distance of the lifting rod and controlling the lifting rod to move away from the oil cup when any two parameters in the set of detection parameters satisfy the first abrupt change condition includes: The movement distance of the lifting rod is obtained, and the lifting rod is controlled to move along a first direction to a first preset position and then along a second direction to a second preset position, wherein the first direction and the second direction intersect.

8. An oil cup level detection device, characterized in that, An apparatus for use in liquid level detection components and oil cups, wherein the liquid level detection component includes a lifting rod, a detection element, and a flexible connector, the lifting rod and the detection element are connected by the flexible connector, and the lifting rod is used to move the detection element and the flexible connector in a direction toward or away from the oil cup, the device comprising: The data acquisition module is used to acquire a set of detection parameters of the liquid level detection component. The set of detection parameters includes at least three parameters, which are selected from temperature value, capacitance value, flexible strain value and acceleration value. The lifting module is used to determine the first motion parameters of the lifting rod based on the set of detection parameters, wherein the first motion parameters include a first motion direction and a first motion speed; The first processing module is used to obtain the moving distance of the lifting rod and control the lifting rod to move away from the oil cup when any two parameters in the set of detection parameters meet the first mutation condition. The two parameters include a first parameter and a second parameter. The first mutation condition indicates that the first rate of change of the first parameter is greater than a first threshold and the second rate of change of the second parameter is greater than a second threshold.

9. A range hood, characterized in that, The range hood includes the oil cup liquid level detection device, liquid level detection component and oil cup as described in claim 8. The liquid level detection component includes a lifting rod, a detection element, a flexible connector and a control device. The lifting rod and the detection element are connected by the flexible connector, and the control device is connected to the lifting rod. The lifting rod is used to drive the detection element and the flexible connector to move in a direction closer to or further away from the oil cup. The detection element is used to detect temperature value, capacitance value, flexible strain value and acceleration value. The control device is used to control the movement speed and movement direction of the lifting rod.

10. The range hood according to claim 9, characterized in that, The detection device includes an accelerometer, a capacitance sensing device, a temperature regulating device, and a temperature detection device. The acceleration sensor, the capacitive sensing device, the temperature regulating device, and the temperature detection device are integrated into one unit.

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